Reversing-gear.



PATBNTED OUT. 31, 1905.

W. J. D. MILLER.

REVBRSING GEAR.

APPLICATION FILED JULY 20. 1905.

INVENTOR BY I - Alma Hey WILLIAM J. D. MILLER, OF HILLSBORO, MISSOURI.

REVERSING-GEAR.

Specification of Letters Patent.

Patented Oct. 31', 1905.

Application filed July 20, 1905. Serial No. 270,531.

T0 at whom it may concern:

Be it known that I, WILLIAM J. D. MILLER, a citizen of the United States, residing at Hillsboro, in the county of Jefferson and State of Missouri, have invented certain new and useful Improvements in Reversing-Gear; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to gear for reversing the slide-valves of traction and other similar steam-engines; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a front view of the reversing-gear. Fig. 2 is an end view of the reversing-gear. Fig. 3 is a detail view of the eccentric.

A is the driving-shaft or operating-shaft of a steam-engine of any approved construction, the cylinder of which is controlled by a slidevalve.

B is a frame which is rigidly secured on the shaft A. This frame extends on both sides of the shaft and is provided with radial guideslots Z).

0 represents screws, bolts, or pins, which secure the frame to the shaft A. The frame is provided with projecting side flanges or wings D, which have guide-slots (Z, arranged parallel to the radial slots 6.

E is an eccentric of any approved form, which is provided with two guide-ribs c, which are slidable in the slots d.

F rep resents cover-plates, which are secured to the ribs 6 by screws or bolts f, so that the eccentric may be slid crosswise of the shaft A.

G G are two wedge-shaped plates which are slidable in the radial slots bof the frame. The eccentric is provided with slots H, which engage with these plates, and the middle part of the eccentric has a recess It, so as to clear the periphery of the shaft A and the sides of the said plates.

I is a collar which is slidable longitudinally upon the shaft A and which has the end portions of the two plates G- secured to it. The

plates are provided with tongues g, which are inserted in slots in the collar next to the shaft,

and it represents screws or bolts, which secure the tongues to the collar. The collar is provided with a circumferential groove 1', and J is a ring which works in the said groove and which is provided with projecting pins 9" for engaging with a reversing-lever.

The eccentric is provided with an eccentric strap and rod of any approved construction and is connected to the slide-valve in the usual manner. v

The valve is reversed by sliding the collar and the wedge-shaped plates longitudinally of the shaft A, thereby moving the eccentric crosswise of the shaft, so that it operates to move the slide-valve in the reverse direction.

When a reversing-gear is constructed in this manner, it is not necessary to cut any keyways in the driving-shaft or in the eccentric, and the eccentric is driven positively by the frame and cannot slip or spring in any way.

What I claim isv 1. In a reversing-gear, the combination, with a shaft, of a frame secured on the said shaft and provided with radial slots at its middle part and guides at its sides, an eccentric provided with projections which are slidable in the said guides, wedge-shaped plates slidable in the said radial slots and engaging with the said eccentric. andmeans for sliding the said plates longitudinally whereby the said eccentric is slid crosswise of the said shaft.

2. In a reversing-gear, the combination, with a shaft, of a frame secured to the said shaft and provided with radial slots, said frame having also slotted wings at its sides, an eccentric provided with guide-ribs which engage with the slots of the said wings, wedgeshaped plates slidable in the said radial slots and engaging with the said eccentric, and means for sliding the said plates longitudinally whereby the said eccentric is slid crosswise of the said shaft.

In testimony whereof I have aflixed my signaturein the presence of two witnesses.

WILLIAM J. D. MILLER.

Witnesses:

JOHN HEINER, O. E. HURSLEY. 

